ExPlay

Google Play (Android Market) API in Elixir 💻

(Ported from node-google-play)

Installation

Add explay to your list of dependencies in mix.exs:

def deps do
  [{:explay, "~> 0.1.5"}]
end

Install JS Dependency

Right now, there isn't an erlang/elixir implementation of Google's Protobuf library that can decode v2 data correctly, so we're relying on the npm module protobufjs. In your project's root, run:

npm init
npm install protobufjs --save

or if you prefer yarn:

yarn add protobufjs

Usage

There are a lot of modules, each handling their own relevant API calls, but you need to be concerned with only two:

• ExPlay.Account
• ExPlay.Request

Authentication

To interact with the Google Play API and get back data, you need a valid and authenticated Google account (with email, password and device id).

# Save this account object to later use in API requests

account = %ExPlay.Account{email: "john@gmail.com", password: "12345678", device_id: "XXXXXXXX"}
account = ExPlay.Account.authenticate!(account)

Get App Details

{:ok, app} = ExPlay.Request.package_details(account, "com.facebook.katana")

app.title
# => "Facebook"

app.descriptionHtml
# => "Keeping up with friends is faster than ever..."

app.details.appDetails.numDownloads
# => "1,000,000,000+ downloads"

app.details.appDetails.versionCode
# => 41212272

# And lots of other stuff. Use Map.keys(app) to get an idea of the response.

Get App Delivery Data

You can get an app's delivery data using ExPlay.Request.package_download_info/2. It will return a map with a downloadable APK url and authorization cookies which you can pass to any HTTP client to download the APK (Even wget or curl).

Note: The package here can be the app's bundle identifier string or a {bundle, version} tuple.

{:ok, info} = ExPlay.Request.package_download_info(account, "com.facebook.katana")

info.downloadUrl
# => "https://play.googlezip.net/market/download/Download?packageName=com.facebook.katana&versionCode=41212272&ssl..."

info.downloadAuthCookie
# => [%{"name" => "MarketDA", "value" => "09919279757374609811"}]

Download APK

Alternatively, you can let ExPlay download the app for you. Specify the package you want to download and a (writable) path where you'd like to save it.

Note: The package here can be the app's bundle identifier string or a {bundle, version} tuple.

ExPlay.Request.download!(account, "com.facebook.katana", "/tmp/facebook.apk")
# => :ok

Roadmap

• Write missing Tests
• Write Documentation
• Update documentation with more information and examples
• Implement pure Erlang/Elixir Protobuf v2 solution for decoding data
• Cover all API calls
  • Authentication
  • Package Details
  • Bulk Package Details
  • Search Apps
  • Related Apps
  • Categories
  • App Reviews
  • Download App
  • Download App Data

Contributing

• Fork, Enhance, Send PR
• Lock issues with any bugs or feature requests
• Implement something from Roadmap
• Spread the word

License

This package is available as open source under the terms of the MIT License.